Title
Quantum Efficiency Modification Of Organic Fluorophores Using Gold Nanoparticles On Dna Origami Scaffolds
Abstract
We used DNA origami as a platform to coassemble a 20 nm gold nanoparticle (AuNP) and an organic fluorophore (TAMRA) and studied the distance-dependent plasmonic interactions between the particle and the dye using steady state fluorescence and lifetime measurements. Greater fluorescence quenching was found at smaller dye-particle distances, which was accompanied by an enhancement of the decay rate. We also fabricated 20 and 30 nm AuNP homodimers using DNA origami scaffolds and positioned a Cy3 fluorophore between the AuNPs in both assemblies. For each particle size, three different interparticle distances were investigated. Up to 50% enhancement of the Cy3 fluorescence quantum efficiency was observed for the dye between the 30 nm AuNPs. These results are in good agreement with the theoretical simulations. © 2013 American Chemical Society.
Publication Date
6-20-2013
Publication Title
Journal of Physical Chemistry C
Volume
117
Issue
24
Number of Pages
12735-12744
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1021/jp312422n
Copyright Status
Unknown
Socpus ID
84879445246 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/84879445246
STARS Citation
Pal, Suchetan; Dutta, Palash; Wang, Haining; Deng, Zhengtao; and Zou, Shengli, "Quantum Efficiency Modification Of Organic Fluorophores Using Gold Nanoparticles On Dna Origami Scaffolds" (2013). Scopus Export 2010-2014. 7104.
https://stars.library.ucf.edu/scopus2010/7104